Ionic liquid-functionalized mesoporous multipod silica for simultaneously effective extraction of aflatoxin B1 and its two precursors from grain

Aflatoxin B1 (AFB1) and its precursors contaminate food and agricultural products, posing a significant risk to food safety and human health, but simultaneous and effective extraction and determination of AFB1 and its precursors with varied structures is still a challenging task. In this study, a bi...

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Veröffentlicht in:Analytica chimica acta 2024-05, Vol.1303, p.342544-342544, Article 342544
Hauptverfasser: Feng, Xiaxing, Sun, Yaming, Zhang, Tao, Li, Jingna, Zhao, Hailiang, Zhao, Wenjie, Xiang, Guoqiang, He, Lijun
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Sprache:eng
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Zusammenfassung:Aflatoxin B1 (AFB1) and its precursors contaminate food and agricultural products, posing a significant risk to food safety and human health, but simultaneous and effective extraction and determination of AFB1 and its precursors with varied structures is still a challenging task. In this study, a bisimidazolium-type ionic liquid functionalized mesoporous multipod silica (SiO2@mPMO-IL(im)2) was fabricated to extract AFB1 and its two precursors, i.e., averantin and sterigmatocystin. The SiO2@mPMO-IL(im)2 could simultaneously extract three targets with varied structures based on the multipods, mesopores, and multifunctional groups. The density functional theory calculations further verified the multiple interactions between SiO2@mPMO-IL(im)2 and targets. The fabricated SiO2@mPMO-IL(im)2 could effectively extract and determine three targets in grains by combing with dispersive solid-phase extraction and high-performance liquid chromatography. Good linearity (r2 > 0.9978), low LODs (0.9–1.5 μg kg−1) and LOQs (3.0–4.5 μg kg−1), satisfactory spiked recoveries (92.5%–106.8%) and high precisions (RSD
ISSN:0003-2670
1873-4324
DOI:10.1016/j.aca.2024.342544